Frequency Comb Photonics Engineer

Infleqtion

Frequency Comb Photonics Engineer focused on developing optical frequency comb systems for quantum technology applications. Supporting design, testing, and integration of photonic components in a collaborative environment.

Posted 6/8/2026full-timeKidlington • 🇬🇧 United KingdomMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

Python

About the role

Key responsibilities & impact

Develop, test, and characterise optical frequency comb systems for quantum technology applications.
Support design and testing of photonic components relevant to comb generation, including resonators, lasers, modulators, passive devices, and integrated photonic circuits.
Build and operate optical test setups for frequency comb characterisation, stabilisation, and performance validation.
Perform laser characterisation, including optical spectra, frequency noise, relative intensity noise, linewidth, and stability measurements.
Characterise modulated laser systems, including high-speed waveform measurements and RF/optical measurement setups.
Develop automated test methods and data analysis workflows for frequency comb and photonic device characterisation.
Collaborate with integrated photonics, quantum systems, electronics, and software teams to integrate frequency comb technologies into larger systems.
Work with external foundries, suppliers, and packaging partners as needed to support device development and evaluation.
Document experimental results, generate technical reports, and present findings to internal stakeholders.
Support risk assessments, safe operating procedures, and good laboratory practice for optical and laser-based systems.

Requirements

What you’ll need

PhD in Photonics, Optoelectronics, or a related discipline; candidates with equivalent hands-on experience will also be considered.
Experience developing, testing, or characterising optical frequency combs, micro-combs, ultrafast lasers, nonlinear photonic systems, or related optical technologies.
Strong understanding of laser physics, nonlinear optics, optical resonators, optical frequency stabilisation, and precision optical measurement techniques.
Hands-on experience with optical laboratory equipment such as optical spectrum analysers, RF spectrum analysers, photodetectors, oscilloscopes, wavemeters, frequency counters, optical power meters, and fibre/free-space optics.
Experience measuring laser or comb performance, including optical spectra, RF beat notes, frequency noise, relative intensity noise, linewidth, and stability.
Ability to design, align, troubleshoot, and optimise complex optical and photonic test setups.
Strong data analysis skills using Python, MATLAB, LabVIEW, or similar tools.
Ability to work effectively in a multidisciplinary, collaborative, and matrixed technical environment.
Good verbal and written communication skills, with the ability to share technical information clearly with both specialist and non-specialist audiences.
Experience with integrated photonics, silicon photonics, or PIC-based frequency comb technologies.
Experience with microresonator frequency combs, Kerr combs, electro-optic combs, or mode-locked laser systems.
Familiarity with photonics simulation and layout tools such as Lumerical, Synopsys, COMSOL, or similar.
Experience with laser stabilisation, optical phase locking, frequency transfer, or optical clock systems.
Knowledge of quantum systems, atomic physics, atom addressing, quantum sensing, or quantum networking.
Experience developing automated optical test stations or hardware-control software.
Familiarity with RF/microwave measurement techniques and high-speed photonic systems.
Experience working with foundries, photonic packaging partners, or external device suppliers.
Understanding of laser safety and HSE practices in optical laboratory environment

Benefits

Comp & perks

Competitive salary
Incentive Stock Option Plan
Generous company 10% pension contribution regardless of employee contribution
Cycle to work scheme
Tax efficient technology schemes
BUPA Private Healthcare Insurance once probationary period is successfully completed
Unlimited PTO  subject to fair usage

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

optical frequency combsmicro-combsultrafast lasersnonlinear photonic systemslaser physicsnonlinear opticsoptical resonatorsoptical frequency stabilisationprecision optical measurement techniquesdata analysis using Python

Soft Skills

collaborationcommunicationtroubleshootingdesignalignmentoptimisationmultidisciplinary teamworktechnical reportingrisk assessmentgood laboratory practice

Certifications

PhD in PhotonicsPhD in Optoelectronics